I guessed Yuvi is going to reveal his true feelings for Suhani after consuming bhaang. I think the letter to Soumya was by Suhani to trick Soumya to come to the terrace. I think she is going to indirectly tell Soumya that she knows her intension to rob her husband. It is in her best interest to leave Birla house. Or another angle could be to exploit Soumya’s dirty intensions to Yuvraj and others. But Suhani is too cultured for the second choice. Even at this stage, she will try to be considerate for Soumya’s immaturity and warn her discreetly. Soumya eventually is going to realise her mistake. Atleat her chapter is going to end for the time being.